Radio condenser



RADIO CONDENSER Filed July 19, 1929 2 Sheets-Sheet Gardz'ZZa,

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INVENTOR ATTORNEY Jan. 5, 1932.

I R. C. SORDILLO RADIO CONDENSER Filed July 19, 1929 2 Sheets-Sheet- 2 RaZp/Z as'anzzzz ATTORNEY Patented Jan. 5, 1932 UNITED STATES- RALPH. C. SORDILLO, OF EAST BOST N, .MASSACHUSETTS RADIO CONDENSER Application filed July 19, 1929. Serial No. 379,484.

ranged diamond-shaped plates, withmeans for moving one set toward and away from the other set'so as to ermit fine tuning of the device, due to the act that the pointed ends of the plates are first brought into overlapping relation and then the wider portions of the plates are brought into overlapping relation and also to provide means for insulating each 'set ofplates from the frame so that the plates are entirely insulated from the metal parts of the frame,thus avoiding any danger of the groups of plates being unequal in induction capacity.

A further object of the invention .is to so form the operating means of the movable group of plates that very fine adjustments can be made.

This invention also consists in certain otherfeatures of construction and in the combination and arrangement of the several parts, to be hereinafter fully described, illustrated in the accompanying drawings and specifically pointed out in the appended claims.

. r In describing the invention in detail, reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which Figure 1 is an elevation of the improved device.

Figure 2 is a section on line 2-2 of Figure 1.

Figure 3 is a section oniline 3-3 of Figure 1.

Figure 4 is a top plan view.

Figure 5 is a section on line 55 of Figure 1.

Figure 6 is a face view of the movable supporting plate.

Figure 7 is a perspective view of one of the insulated supporting blocks used in supporting the diamond shaped plates.

Figure 8 is a view of one of these diamondshaped plates. s

In these views, the numeral 1 indicates the base plate which has its ends bent downward- 1y at rightanglcs, as shown at 2 This plate supports the four upright rods 3 by having the holes in the plate through which the rods pass and each rod carries a pair of spacers or sleeves 5, the lower sleeve being longer than the other sleeve. A narrow plate 6 has a pair of holes therein through which passes one pair of the rods 3 and a plate 6 has holes therein through which passes the otherpair of-rods 3. These plates 6 and 6 rest upon the upper ends of the sleeves 5 and the lower ends of the upper sleeves 5 rest upon said plates. A top plate 7 has holes therein to receive the upper ends of the four rods 3 and this plate rests upon the upper ends of the upper sleeves 5. The parts are held together by the upper and lower nuts 8 on the ends of the rods 3. A screw shaft 9 has its upper end journaled in each of the plates 6, 6', at approximately the center of the plate, and the lower ends of'these screw shafts are fastened in the hubs of the beveled gears 10 which are rotatably mounted in the base 1 and engage the beveled gears 11 carried b a shaft 12 which is journaled in the depen ing parts 2 of the base 'plate. Said shaft is provided with a handle 13 so that it can be turned to rotate the screw shafts. An elevator plate 14 is formed with four iding holes 15 through which the lower s eeves 5 and the rods 3 pass, and a pair of nut members .16 is fastened to the 11 per face of the plate 14 and the screw sha s pass through these nut members and through holes 17 formed in the elevator plate so that as the screw shafts are rotated, the elevator plate will be raised and lowered.

Blocks 18, of non-conducting material, are fastened to the top plate 7 and the elevator plate 14 by the bolts 19. Each plate carries a pair of these blocks and each block carries a pair of brackets 20 through which a long bolt 21 passes. A group of diamond-shaped plates 22 is carried by the plate 14 and 11 mmilar group of plates 22'. is carried by the top plate 7. Each plate is formed with a pair of wings 23 and thesewings are perforated to receive the bolts 21 and washers '24 are placed between each pair of platesand are perforated to receive the bolts 21. Thus the plates of each group are spaced apart by washers and as the brackets 20, which support the bolts 21, are carried by the blocks 18 of non-conducting material, the diamondshaped plates are insulated from all metal portions of the device. The plates 7 and 14 are formed with openings 25 which form clearances for the bolts which connect the brackets with the block, so that there is no danger of these bolts contacting the plates. Each plate 7 and 14 is also formed with the opening 26 so as to provide clearances for the diamond-shaped plates 22. The base plate is also provided with an opening 26 to provide clearance for the lower ends of the lower group of diamond-shaped plates when the elevator is in lowered position.

A. slotted dial plate 27 has its upper end connected to a depending part of the plate 6' and its lower end suitably connected with the base plate and a marker 28 has its shank passing throughthe slot and suitably connected with the adjacent nut member 16, so that the marker will move with the elevator and thus indicate on the dial the adjustments of the lower group of diamond-shaped plates. A threaded panel installer 29 is carried by one of the depending parts 2 of the base plate and the shaft 12 passes through the same, as shown.

From the foregoing it will be seen that the diamond shaped plates are insulated from the metal parts of the frame and that the plates are drawn together in a straight line so that they can be moved to a position where the end points of one group of plates will overlap the end points of the other group and then by moving the lower group upwardly, the over, lapping portions of the plates are gradually increased so that a very fine tuning action is secured and as it takes approximately 32 turns of the crank 13 to move the elevator and its plate 1 inch, very fine adjustments can be secured, so that the device will receive broadcasting matter from stations that are using wave lengths which vary but slightly, as well as distant stations.

It is thought from the foregoing description that the advantages and novel features of the invention will be readily apparent.

It is to be understood that changes may be made in the construction and in the combination and arrangement of the several parts, provided that such changes fall within the scope of the appended claims.

What I claim is g 1. A condenser of the class described comprising a base, a number of uprights havin their lower ends connected with the base, spacers on the uprights, a pair of plates perforated to receive the uprights, said plates being supported in an intermediate position on the uprights by the spacers, screw shafts each having its upper end journaled in one of said pair of plates and its lower end jouri aled in the base, a horizontal shaft journaled in the base and having a handle thereon,

prising a base, a number of uprights having their lowenends connected with the base, spacers on the uprights, a pair of plates perforated to receive the uprights, said plates being supported in an intermediate position on the uprights by the spacers, screw shafts each having its upper end journaled in one of said pair of plates and its lower end j ournaled in the base, a horizontal shaft journaled in the base and having a handle thereon, gears connecting the shafts together, a top plate connecting the upper ends of the uprightstogether, an elevator plate slidably arranged on the uprights, nut members on the elevator plate through which the threaded shafts pass, brackets insulated from and carried 'by the elevator plate and the top plate and a group of diamond-shaped plates supported by the brackets on each of the top and elevator plates, an indicator plate having one end connected with one of the intermediate plates and its other end connected with the base, said indicator plate having a slot therein and a marker connected with the elevator plate and passing through the slot.

In testimony whereof I aflix my signature.

RALPH C. SORDILLO. 

